Combined type-writing and computing machine.



lW. WIIIGIHT"y COMBINEI) VTYPEWRITING AND COMPUTING MACHINE.

' APPLICATION FIQEIJ NOVI 22. I9I2.

Patented 00u15, 19m

3 SHEETS-SHEET I.

TlwllIllllIlllll I||IIIIIL I III w WRIGHT. 4 4COMBINED TYPE WRITING' AND COMPUTING MACHINE. 1,281,889.

APPLlcAnou min nov.` 22. m2.

` Patllted 0G13. 15, 1918.

3 SHEETS-SHEET w. WRIGHT. COMINED TYPE WRITING AN COMPUTING MACHINE.

APPLICATION FILED KOVZZ. I9I 2.

3 SHEETS-,SHEET 3.

UNITED sTATEs PATENT OFFICE.

WALTER WRIGHT, orA NEW Yomn-. Y.,

ASSIGNOR T0 UNDERWOOD COMPUTING MACHINE COMPANY, OF .'N EW YORK,- N. Y., A CORPORATION OF NEW YORK.

lCOMBINED TYPEWBITING AND COM'PUTING MACHINE.

Patented Oct. 15, 1918.

Application filed November 22, 1912, Serial No. 732,861.

To all Awhwn.- 'it may concern:

Be it known 'that I, lvVAI/rnn VVmon'r, a citizen of' the United States, residin r in New York city, in the county of New Y ork and State of New York', hayc invented certain new and useful Improvements in Com# -bined Type-lVi-iting and Computing Machines, of' which the following is a specification. I

My invention relates to combined typeA writing and computing machines of the type in which a master wheel is caused to engage semum a gang of computing,y wheels and turn said computing wheels toan extent debe fixed.

tei-mined in each case by the numeral key operated. In the present invention, power means lare provided for so turning said master, wheel,

and the extent of said turning maybe controlled' by escapements, there being a separate escapement for each numeralkey. A IA mg of computing wheels may be in'- clude'cgl1 in a totalizer-which travels step-bystep with the typewriter carriage, so as to carry thecomputing wheels therein past the master wheel whose plane of rotation may .Said master-wheel may be normally locked. and at @he operation of any numeral key an escapement may connect the driven. shaft' by means of'jntermediate gearing in such a way'as vtofirs'trelease said )mister wheel shaft, then positively turn it, and then positively lock itl" A u Themaster wheelshaft may he' normally 'locked by .means of a universal lock, which. by the-operation of 'said intermediate gearingis thrown to ineffective position, while at the same time a lock under the control of the gearing for the numeral key, then being operated maybecome effective and hold said master wheel shaft locked. Thislock is preferably in the form of a' Geneva lock, and it f may hold said masterwheelVv shaft locked 'thenniversal lock is again made effective.

When the universallock becomes effective, the Geneva lock` Whose operation has JustV been, describedL becomes ineffective,` thusle'aving themaster wheelshaft free to 'be Q ranged to `arrest said 'clutch by to the full extent.

turned by the operation of any other numeral key.

`The escapement devices of rwhich said (enevalock and gearing forms a part. may be in the form of one-revolution clutches within which a power-driven shaft normally turns idly. `With every depression of a numeral key, its clutch is permitted to seize said powerdriven shaft and 'rotate the mas yter wheel and operate the locks, as above (le'sciibefl. Each clutch may b'e normally held against accidental displacement byl aspring;r dctcnt catching in a notch in the clutch.

The onefrevolution clutch may com rise an arm,'which normally holds said c utch 'against turning by abuttin against a solid dog. On the depression o a numeral key, Said soliddogr maybe rocked laterally clear of saidstop, so 'as 'to permit the clutch to' make a, revolution. "-Ifthe numeral key is immediately released, said solid dog may return quickly enouoh 4to arrest the clutch at the end of one revolution.. If, however, the numeral key i's notarrested sufliciently soon, a pivoted dog on said solid dog may be ar- `means of said stop on theclutch. Said pivoted dog is normally swung by a' springgout of the wayofthe stop on the clutch soi' as not to. interfere with the lateral swingingof the solid dog. When however,

said pivoteddei: intercepts said. stop Vto ar- `i'.st saidclutch, the stop swings 4the `dog into position alongside of t ie solid dog, sothat the elutchis arrested in thessame position whether it is the-solid dogfor the pivoted dog which does the arresting. After the pivoted' dog has arrested said clutch the re lease of the key will rock the solid dof,r to

hold siiid clntch.

' y .Themechanism may 'also comprise a full stroke mechanism foreach-numeral key so as to 'prevent a'ny key once part way'depressed, frombeing returned, unless it 1s depressed This full-stroke mecl1a' nism may comprise a toothed-plate which cooperates )with a pivoted pa`w l. For ac: eomplishing this result, the said toothedplate may comprise an arm for operating the clutch escapement device: above described. Said mechanism Vinane-lso con'iprisel ,a series of dog.. arragedto prevent the depression of more tha oneke'y at a time, said Y dogs being adaptedfto be swung sidewise `when the key is depressed, and the amount of saidswinging'being limited 'to the thickness of one of said toothed plates. Since the space over which said dogs can swing is no greater than the thickness of .one of Said y ing turned. The mechanism for this pur- 'pose may comprise a rack fast on the totalizer carriage, into which rack a tooth is swung by the rotatin clutch which is dri-ving the master whee Said tooth may be positively held in engagement with said rack during practically the entire revolution of said clutch, and then be positively moved out therefrom by means of said clutch.

By the above means,.I have provided a combined typewriting and computing mechanism in which the load on the numeral keys consists' practicallyexclusively of the operaltion-of the fixed and pivoted dogs, above described; while the power drive turns the master wheels, the computing wheels andv all the locks, including'the lock for preventing transverse feeding of the totalizer relative to the master wheel.

Other features and advantages will here inafter appear.

In the accompanying drawings,

Figure 1 is a sectional side viewl of acombined typewriting and computing machine, showing my invention as applied thereto, certain Vpartsbeing omittedA for the sake of clearness.

Fig. 2 is a front view of the same.

Fig. 3 is a side View of the same, showing particularly the power drive.

Fig. 4 is a side view of part of the connections between one numer. key and the master wheel shaft.

Fig. 5 is a rear the clutch. I A

Fig 6 is a section through the clutch, showing some adjacent parts.

Fig. 7' is a perspective view of the parts seen inthe lastthree figures. Y

Fig. 8 is a detailperspective ofthe loc-k for the totalizer carriage.

Fig. 9 is a. diagrammatic series of side views of the gears by which the different clutches drive the master wheel to different extents, certain of said gears being shown in relation to their Geneva lock.

Fig. 10 is 'a detail of the universal lock.

Numeral keys 1 and alphabet keys 2of the typewriter depress key levers 3, causingl bellferanks 4. to swing type bars 5 rear' wardly and upwardly against the platen 6 mounted in a traveling carriage 7, so that the type S 'on said tvpe bars 5* print against 'carried along therewith.

-b|o continuously View of theesca'pement for- ,one for each computing wheel.

as will'be seen best in Fig. 7, are cut awayon the faces 39, which do not bear on' said platen. Said carriage is drawn in letterfeeding direction by means of a spring barrel,

and 13 are caused to operate to feed said carriage by means of a universal bar 14 operated from heels 15 on the type hars, said heels striking said bar as the types approach the platen.

As said carriage 7 moves forward inlety 'ter-feeding direction, a bracket by. means of a pivoted arm 17, causes a totalizerlS on a totalizer carriage 19 to be Said carriage comprises tracks 20 and 21 which engage rolls 22 and 23, so that it will slide along easily. Said totalizer comprises dial wheels 24 and computing wheels 25 which, in a` manner hereinafter to be described, are caused to be turned by the master wheel 26 from the electric motor 27. Said electric motor may running, and includes a shaft 28 which, by means of bevel gears 29 and a vertical shaft 30, turns the power driven shaft 31 of the computing mechanism by means of beve-l gears 32. Loosely mounted on. the drive shaft 31 are a series of clutch members 33 one for4 each numeral key, which are arranged to seize said drive shaft 31, so as to turn therewith, and through connections presentlyV to be described, turn the master wheel 26. f- These clutch members 33 form parts of integral locking and driving units.

For so turning said master wheel, each locking and driving unit-comprises a mut-ilated gear 34, which when turned, strikes teeth 35 of a gear wheel 36 fast on the counter shaft 3.7. Said counter shaft 37 also carries fast thereon a gear wheel 38 4meshing with a gear fast on the master Wheel 26, so that everyl time the counter shaft 37 is turned, the master wheel 26 will be turned to a corresponding extent. The computing wheels 25 are turned by the master wheel 26 by intermediate gears 25 of which there is The teeth 35,

any other ear, so that; when the mutilated gear 34 str1 es them there can be no 'possible interference with the ineffective faces of said teeth 35.

AThe counter shaft 37, previously to being turned by the mutilated gear 34, is .temporarily held positively locked by means of a Geneva lock 40 forming'part ofthe locking 4 and drivin unit. Said Geneva lock ,40 when turned Wi' said mutilated gear, comes in front of one face of a. ten-faced wheel 41, whose faces@ are concaved so as to -fit closely the Geneva, lock 40 of the mutilatedl gear 34. a

16 thereon,

" turning. Later '40 Which'is cut awaymomes in front of the .,w ith for one revolution.

' it, a. link 45 pivoted on ,its

Ylated 'gear 34 the raised said ten-faced 4wheel may-freely turn. .TAs

has been said, with.- the turning of the mutiportion' of said Geneva lock 40 comes in Ifront of and positively locks said ten-faced wheel against a part of the Geneva/lock ten-faced wheel 41 so as .to permit the tenfaced. wheel to turnwhen the mutilated gear 34 is turningt'lie counter shaft 37, said tenfacecl wheel being fast on said shaft 37.

The counter shaft 37 is positively arrested: after it yhas been turned to the correct extent by means of. a secondGeneva lock 44, fast on theGeneva. lock 40, which comes in front of said tenfaced wheel 41 so as' to lock it, thus positively reventing any overthrow of tlieeounter sliait by means ofthe mutilated gear-34.' f ;Ihe clntch'niembers33, as has beenfs'tated,

.turn freely on the drive shaft 31. W'ith every depression. of' a numeral key',4 one of 'said clutch members'33 is power-driven shaft 31 to be locked 'fito the i turned `there For4 thus locking numeral key exi l tends upwardly towhere it is pivotedon 1a.

'segment 46,- said1segmeiitbeing pivot d' at A 47 and operating an eseapementfor=lo king the clutch member to the drive'gshaft.

Said escapement comprises -a solid dog 48, which normally lies in the path cfastop 49 pivoted at 50 on the clutchmember 33. Said stop 49 forms one end ofabell4 crank 51,

which is drawn' by means 'of afzspring 52 so as to tend'- to cause a tooth 53 thereon to lock with one of the teeth 54` fast on the drive shaft 31. Said tooth, however, is-nornially held out of the pathofteeth 5 4, because thu l friction which, exists between the driveshaft 31 und the clutch member causes thestop 49 to bear against the fixed dog 48- and so hold the' bell crank l-outwardly. This out ward throw is limited by means of a pin 55 set in the clutch'member 33.

When the numeral key Vis depressed the solid dog 48 is swung toI ineffective position. 4 It which it is fast by ineens of a rock arm 57 swings thus `with the stubshaft 56 to fast on said sluli shaft 56 and 'underlying an arm of the segment 4G. Thus when the segment 4,6 is swung `down by the depression of the numeral key, the solid dog will be swung to the left, as viewed in Fig, 2, and thus permit the spring,y 52 to draw en the tooth 53 so that it will mesh with the teeth 54and thereby the clutch member 33 willrevolve with the drive shaft-31. y l e If the numeral key -is released ,rapidly intercepting the stop 49, which of the stop abutment on -the solid l48 alone holds the stop enough, the solid dog will swing back into position and arrest the clutch member 3B by not only-will arrest said .clutehv member, but will release it from the fdrive'shaft 31 by swinging the tooth 53 clear oft-he teeth 54. 1f, however, l the numeral key' is held depressed, the stop 49 is arrested by apivoted dog 58 pivoted on the slid doglat'Q-whieli pivoted dog 's normally swung' 'iearwardly by means of Aa 7 spring 60 around s'aidpivot out of the path of the stop 49, so that when said solid dog is rocked, the pivoted dog 58 will rock clear y 49. If saiddiivoted dog 58 intercepts the stop 49, the dog-will be swung forward till it strikes iipn 61, forming a solid dog, when it arrests the stop. When the numeral key is then released, the dogs 48 and 58 will then have their faces in the same 'lane so that they can slide past stop 49 smootlily, till said fixed dog i 49. The spring' 60 will then swing the pivoted dog 58 forward tillit strikes a -pin GZagainst which it normally rests.

t Any rebound of the clutch member 33 is prevented by means. of a 4spring detenta, 63,

which is normally drawn so as to. enter a depression-64Y in aplate G5 fast to the clutch' member 33, which detent is'pivoted on `the 95 shaft 66 to which the segments 46 are pivoted and lis drawn'upward'by means of a sprin'g 67 'at the outer end thereof. The' master wheel is normally held locked againstaccidental `rotation by means of a universal lock 68, which bears against a tenfaced wheel 69,` formed like the ten-faced wlieels 41. Thus the universal-"lock holds 4the masterwheel locked when all the Geneva locks 40 are in their ineffective positions.

Said universal ylock is moved to ineffective position with the initial part of the turning of any clutch member 33. For this purpose, each;clutclinieinber 33 is formed with its outer surface as acum'. Said camfas seen in 110 Figs. 4, 7-'ai1d ,8, com'l'irises a eut-away portion 70, in Whichal eam finger-,7l normally rests idly. VVhen the clutch member 33 begins to turn, it brings a raised portion 72 4under said finger 71 so as to swing theshaft 115 73 to which said finger 71 isV fast, and by means of a rock arm '74 fast on shaft 7 3,

the loekingmeinberS isswnng to ineffective position around its pivot 75. The connections between said rock -ai'm 74 andthe 12o 10131968 include 'a pin 76 fast on an extension 77V ofsaid lock, and aslot 78 in said rock arm in which said pin works. As the clutch `member 33 continues to turn, the raised cam surfaceff thereon continues-to hold the uuiversal' lock 1nl ineffective position. When,

however, the clutch member 33 has nearlyr completed/one revolution, a* second cam 79 formed i is part of said locking and driving'` unit strikes a second4 cani finger 80 by means 130y 4 of a raisedportion 81 on said cam, so as to positively rotate the rock shaft 7 3 to which said finger 8O is fast in the opposite direction, thereby positively moving the lock 68 into the position seen in Fig. 10.

While the drive shaft is turning the computing wheels through the master wheel, the totalizer carriage is positively locked against transverse movement, In this way any ossible stripping of the gears in the totalizer by failing to mesh properly with the gears of the master wheel is'rendered impossible. For thus locking rlietotalizer carriage, a lower face 82 thereon has rack teeth 83' cut in it, which are arranged to'be engaged by a rock arm 84 fast on the rock shaft 73. Said rock shaft 73, it will be remembered, is the one which operates-the universal lock 68. It

is accordingly Seen ,that since Vsaid shaft al. -wa-ys holds one of the two locks 84 and 68 effective and the other ine'ective either t-he master wheel is held locked against turning, or else the totalizer is held locked against transverse movement.

A locking and driving unit as seen in section in Fig. 6, includes all the arts einbracing t-he shaft 31 between the cluteh member 33 and the cam 65. These parts' are all fast toeach other and turn as a unit on' `said 'shaft 31. Since each unit determines or indexes the amount to which the master Wheel turns when its key is actuated,'the units asia group form an indexing device universal to the master Wheel. v

The' segments 46 may be utilized as part of the full-stroke mechanism, so as to prevent any numeral key from being partly depressed and then returning before' completing its depression. For `this purpose, the rear side 85 of said segmentsis cut into teeth which are each arran 4d to coperate with its swinging pa-wl 86 pivoted at 87 and drawnby a spring 88 so as to project into the path of said teeth. Said aw] 86'is of such length that when one toot 85 passes it, any return move-mentof the key will catch 'said tooth, 'but when all the-teeth 85 have passed the pawl, the 'spring 88 swings the pawl so that the teeth 85 may strike on the opposite side of the oi'nt ofsaid p'awl, and thus push it aside idly. A

.Said segments 46 may likewise be utilized as means-for preventing more than one key from being depressed at any one time. To accomplish this, said segments 46 lie between upstanding dogs y89 pivoted in a.- bar 90, there being two dogs for each segment a6,

and the dogs being soformed that they havel sloping fares 91 forming fairly sharp points which almost meet just below the' ents 46. The throw of said dogs 89' is limited by having the two end dogs ]oined by a. bar 92 pivoted on downwardly extending arms 93 of sait4 end dogs., The ler'gth of the bar 92 is such that there is a little lost motion be dogs. t inee the segments 46 are linked to the numeral keys it is consequently impossible for any numeral key 'to be depressed, while any other one is depressed.

The solid dog 481s normally held in position to arrest the stop 49 by meansl of a spring 94 anchored in the coss-bar 95 on which' sa id'dogs .ire journaled and drawing on said fixed dog by means of a pin 96 fast thereon- Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others. Having thus described my invention, I claim. Y v

L In a combined typewriting and computing maehine,-. the combination with. a. series of numeral keys-'and computing mechanism comprising computing wheels, a master wheel, 'and a master wheel driver, of a lock normally preventing rotation of said .each key, by means of which each key may v initiate the driving connection fromthe moioo tor ,to itsco'rres'p'onding indexing and lock-I controlling unit to cause it to effect its cycle of unlocking, driving, and locking operations.

In al combined typewrit-ing and computing machine, the combination with a typewriter carriage, a series of numeral keys, and a carriage escapement controlled by said keys, of computing mechanism comprising computing Wheels, a master wheel, and a master wheel driver, relative lateral move- .ment between the master wheel andthe computing wheels-being effected byconnect- .ing parts of said computing mechanism to move with said carriage, a -lock normally preventing rotation of 'said in'aster wheel, a.,

ock4 to prevent movement 'f said carriage means to cause said locks to lock said car.-

durin rotation of said master wheel, a series i riage and release said- 'master wheel, means" to im art to said master wheel, through said river, a rbtation of predetermined i Lacasse extent, andmeans to relock said master wheel and release said carriage, a motor to .drive said indexing and lock-controlling units, and ayseries of key-controlled onerevolution clutches, one for each key, by means of which each key may initiate the driving connection from the-imotoi' to its corresponding indexing and lock-controlling unit to cause it to effect its cycle'of unlocking, driving, and locking operations.

3. In a combined typevn'iting and com puting machine,` the combination with numeral keys, computing wheels anda motor -for turning said wheels to an extent deterthe numeral key operated,'of a unlock said master wheel and then posif tively turn said master wheel, and then pos= tively lock said master Wheel after it is thus turned.

`roc ng 4each fixed do c its stop by its numeral I ey, so that its clutch fl. In acombined typewriting and computing machine, -the combination with numeral keys, computing wheels and a motor for turning Asaid wheelsto an extent determined by the numeral key operated, of a constantly rotating shaft driven b `said mo tor, a series of clutches on said s aft, each comprising a mutilated gearnorirally held stationary, teeth on said gear 'corresponding to the number of the numeral `key control ling it, an escapement operatedby each numeral key for causing its clutch to'seize said shaft and turn said mutilated gear one revolution, a master wheel for, turnmgsaid conipnting wheel aeriatim, a lock normally holding said master Wheel, a gear for each of said clutches tocause the mutilated gears respectively to turn said mas'ter wheel, and means operated b the clutch' for unlocking said niaster;,wheel for rotating said master Wheel, and for again locking said master Wheel. i

5. In a combined typewriting and com puting machine, the' combination with nu meral keys, computing Whel's and a motor for turning said Wheels to `:in extent determined by the key operatedsof a constantl rotatin shaft driven, by said motor, a clutch for eac numeral key on said constantly rotating shaft, a mutilated gear carried by each clutch corresponding to the number' of the numeral key, a stop on said clutch by which it is normall held, a Vfixed dog for holding said clutch y said stop, a swinging do ivoted on said fixed dog', and means for out of the pat-h of will seize and simultaneously bring the pivoted doginto the path of said stop so as to shaft driven by sai-d arrest it at the end of one rotation o f said clutch.

6. In a combined typewriting and computing machine, the combination with nui meral keys, com )uiting wheels anda motor for turning said wheels to an extent determined by the numeralkey operated, of a series of locking and driving units, one for each numeral key, each unit having a nurnber of driving teeth thereon proportional to the numeral key controlling it, -a constantly rotating shaft driven by said motor, and means controlled by each numeral key causing the constantly rotating shaft to drive its locking and driving unit to first lock the master Wheel against rotation, then to posi` tively rotate said. master wheel, and then to lock said master Wheel.

7. In a combined typevvriting and computing machine, the combination with numera] keys, com uting Wheels and a motor for turning sai termined by the numeral key operated, of a series of locking and driving units, one forl each numeral key, each unit having a number. of drivin teeth thereon proportional to the numeral ey controlling it, al constantly rotating shaft driven by said motor, means controlled by each-numeral key, for causing the constantly rotating 4shaft to drive its wheels to an extent de sol locking and driving .unit to first lock the master Wheel against rotation, then to positively rotate said master wheel, and then to lock said master wheel, a lock normally holding said master wheel against rotation, a lock adapte-d to lock said master wheel against transverse movement relative to the computing wheels, and meansV for positively moving said rotationlock to ineffective position and said transverse speed lock to effective position by said locking and driving unit, and for positively reversing said operation. i 8 In a combined typewriting and'computing iinachine,V the combination -with nur'neral keys, com uting wheels and a motor for turning sai wheels to lan' extent cletermii'ied by thenuineral key operated, ot a constantly rotating shaft driven by said motor, a.' series-of clutches comprising mutilated gears, one for each'numeral key," a

pseriesbf Geneva locks,- each lock associated -with its clutch, a mster wheel for turning said computing wheels seratz'm, said Ge- "neva locks being normally ineffective on said master Wheel, a member on each Geneva lock for positively locking said master Wheel on the initial ,rotation of'said clutch previous to its rotation by its gear, a second lock on each clutch for locking said master Wheel after it is rotated by the mutilated gear,.and a dete t for normally holding said clutches so tha the GrenevaV locks thereon hold s aid master Wheel unlocked.'

9. In a combined typewriting and computing machine, the combination with computing mechanism including a series of coni-v puting wheels and a master wheel there` for, of a series of numeral keys a series of indexing devices, one for each numeral key, t0 operate said master wheel to an extent dependent upon the numeral key operated, a motor to drive said indexing devices, a series of key-controlled one-revolution clutches, one for each key, for establishin driving connections from said in'Otor to said indexing devices, a series of' pivoted, key-operated controllers, one for each key, means engaged by each controller when moved by its key to trip the corresponding clutch, means engaged and operated by each controller ,when moved to preventtlie return of its controlling key prior tothe coinpletion of its stroke, and means engaged by each controller, when moved by its key, to prevent the numeral key `prior to the return of the key by which it is controlled.

10. In a combined typewriting and couiputing machine, the combination with numeral keys, computing wheels and a motor fertili-ning said, wheels to an extent determined by the numeral keys operated, of a master wheel for turning said computing wheels serz'atm, a series of locking and driving units for turning said master wheel, there. being one unit foreach numeralk'e means operated by each unit for lockiiigsaid master Wheel' against rotation by the initial rotation of said unit, a lock normally holding said master wheel against rotation, a.- lock for holding said master wheel and co puting wheels against relative transverse movement, means operated by said unit for positively unlocking said rotational lock and locking said transverse feed l'ockas each unit initially locks said master wheel, a gear on each unit for turning'said master wheel numeral keys,

to an extent determined by the numeral key operated, a'lock on each unit for positively locking the master wheel after it is Vthus turned, and meansI ou said `unit for positively relooking the rotational' lock of said master wheelvand unlocking the trans verse feed lock thereof.

1l. In a combined typewriting and coinputing machine, the cou'ibination with computing wheels `and a motor for turning said wheels to an extent detcrn'iined by the numeral key operated, of a shaft 'constantly driven by said motor, a series of locking and driving units loose on said shaft, aclutch-for each unit, a inas ter wheel shaft arranged to' be either locked or driven by said units, and means f or caus ing each clutch to lock its unit to the constantly rotatinfrshaft by its numeral key.

12. In a cointbined typewriting and coinputing ni-afchine,v the combination with numeral' keys, computing 'wheels end aL-L` operation of another' i 'motor for turning said wheels to an' extent determined by the numeralkey operated, of a series of clutches, one for each numeral I dog arranged to lie in the path of said stop so as normally released, an arm for rocking each dog out of the path of saiHstop by the numeral key so as to cause said lclutch to seize, and a pivoted dog on each fixed'dog for arresting said clutch.

13.# The combination with a shaft arranged to be constantly rotated, of a clutch on said shaft, and a Geneva member fast to said clutch on said shaft adapted to positively lock or positively rotate a computing wheel.

14..In a computing machine, the= conibination with coinputin mechanism coinprising'. an actuator sha t and to said indexing unit, an escapement to render said clutch effective when tripped and to dsengage said clutch aftera predetermined rotation of said' indexing unit, means to hold said indexing unit in its normal position when said clutch is disengaged, means on said actuator shaft to be engaged by said indexing unit during a-portion of its predetermined movement to im. part a predetermined rotation to said actuator shaft, and locking means controlled by said unit to prevent rotation of said actuator sha t vduring rotation of said indexing unit except when effective as a driver, said locking i'ueans being ineffective when said unit is in normal position.

15. In. a con'iputing,machine, -the coinbination with a motor, and a master wheel, of noriual locking means, separate initial locking means, turning means for releasing the normal locking means and making the initial locking effective, and final locking means made effective by the turning means but normallyl unlocked.

-16. In a combined typewriting and ,coin-- puting machine, the combination' with numeral keys, computing wheels and a motor for turning said wheels to lan extent determined by the numeral key operated, 4of a' rotating shaftdriven by said motoi, a mutilated gear for each numeral key having teeth on it corresponding to the number of said key, a master Wheel shaft normally locked,

and means for clutching each mutilated gear by its key to the rotating shaft to cause said gear to unlock said master wheel and then positively turn said master wheel, and then thus turned.- ,i 17. 1n a combined typewriting andI commeral keys, computing wheels and :tI-motor positively lock -said master wheel after it is #125 puting machine, the'eombination with nu 'for 'turningsaidfwheels to an de- 130 termined by the numeral key-operated, of a 'rotating' shaft drivenby said motor, a series turn said mutilated gear one revolution,'a

masterwheel for turning said computing wheels seratim, a lock normally-l holding said master Wheel, a gear for each. of said clutches to cause the mutilated gears respectively to turn said master wheel, and means operated by the clutch for unlocking said master wheel, for rotating said master wheel, and for again locking said master wheel.

18. In a combined typewriting and coniputing machine, the combination with numeral keys, computing wheels anda motor for turning said Wheels to an extent deterniined by the key operated, ofV a rotating shaft driven by said motor, a clutch for each numeral key on said rotating shaft, a muti- 'lated'gear carried by each clutch corresponding to the number of the numeral key, a stop on said clutch by Which it is normally held, a fixed dog for holding, said clutch by said stop,'a swinging dog pivoted on said fixed dog, and means for rocking-each'xed 'dog out of the path of its stop by its numeral key, so thatits clutch will lseize and simultaneously bring the pivoted dog into the path ofsaid-`stop so aslto arrestrit at the end of one.rotaton of said clutch.

19. In a combined typewriting and corn-- puting machine, the combination with numeral keys, computing'wheels and a motor for turning said Wheels to an extent delock normally holding said master wheel against rotation, a lock adapted to lock said master Wheel against transverse movement;l

.relative to the computing wheels, and means for positively movingysaid rotation lock tol' ineffective position and said transverse feedy lock to effective position by said locking` ,and driving unit, and for positively revers- .ing said operation. i Q Lf In a combined typewi'iting and computing machine, the combination with nu-l meral keys, computing wheels and a motor for turning said wheelsto an extent determined by the numeral key operated, of a rotating shaft driven by said motor, a series of clutches comprising mutilated gears, one for each numeral key, a series of Geneva locks, each lock associated with its clutch, a master wheel for turning said computing Wheels sew'atz'ni, lsaid -Geneva locks being normally ineffective on said master wheel, a member on each Geneva lock for positively locking said master Wheel on the initial rotation of said clutch previous to its rotation by its gear, a second lock on each clutch for-locking said `master wheel after it is rotated by the mutilated gear, and a detent for normally holding said clutches so that the Geneva locks thereon holdsaid master Wheel unlocked. l 22. ,In a combined typewriting and com puting machine, the combination with -nu'fA meral keys, Vcomputing Wheels and a motor for turning said wheels to an extent determined by the numeral vkey operated, Vof a sha/ft driven by said motor, a series of locking and driving units loose on said shaft, a clutch for each unit, a master Wheel shaft arranged to be either locked or driven by said units, .and means for causing each clutch to lock its unit to the rotating shaft by 'its numeral key.

'20.In a combined typewriting and computing machine, the combination with numeral keys, computing wheels and a motor for turning said wheels, to an extent determined by the numeral key operated, ofa series of locking and driving units, one for eachfnumeral key, each unit having anumher of driving teeth thereon proportional to the numeral key controlling it, a rotating shaft driven bys'aid motor, means controlled by each numeral key for causing the rotating shaft to'drive its locking and driving unit to first lock the master wheel against rota-v tion, then 'to positively rotate said master Wheel, and then to lock saidsmaster Wheeha 23, rIhe lcombination ivith a shaft 'an ranged to berotated, of a series of chiches on said shaft, a plurality'of Geneva niem ,icay

bers onsaid shaft adapted tc: positively lock i or positively rotate a computing Wheel, and i numeralkeys selectively controlling said Geneva members through said clutches. 24. In a computing machine, the combination with-c'omputing mechanism4 comprising an actuator-shaft and a driving shaft, of an indexing unit to be driven from said driving shaft, a clutch to establish a driving connection from said' driving shaft to said indexing unit, an escapement to render 'said clutch eii'ective when tripped Vand to disengage said clutch after a predetermined rotation of said indexing unit means engaging y said indexing unit to hold it in normal position ivhcn said,

clutch is disengaged, ya discontinuous driving connection comprising a pinion 4fast on said actuator shaft and a segmental gearfast on said indexing unit to impart a predetermined rotation to said actuator shaft upon each rotation of sald lndexlng un1t, and a Gelieve lock comprising a part fast upon said actuator shaft and also including' parts of said indexing unit, said Geneva lock being effective to prevent rotation of said actuating shaft during the rotation of said indexing unit except that portion during which it is effective as a dri ver, 'said lockin r means being ineffective when said unit is in normal position.

In a computing machine, the combination with numeral keys, of a master wheel and its shaft, Geneva locks for controlling said master wheel shaft, a power shaft for driving said master wheel shaft. on which power .shaft said locks are journaled, and an escapement under the control of each numeral key adapted to lock its Geneva lock to the power shaft. l

26. In a computing machine, the 'combination with a 'p ower shaft and a master wheel shaft, of a series of wheels each comprising teeth fast on said power shaft, a series of integral units loosely mounted on said power shaft, each unit adjacent one of said toothed wheels and adapted to either drive or lock said master wheel shaft, and a member associated with each unit for clutching it to its toothed wheel, to canse a key-operated escapement to be effective thereon.

27. In :i computingpmachine, the combina#- tion with an indexing member and a drive sha ft for driving said member, of an escapement dog normally holding said indexing member released from said shaft, a key adapted to swingsaid dog to ineffective position, and an auxiliary dog for arresting said indexing member if the key is held depressed, said auxiliary dog being moved into whole period of i for determining when it means including its effective escapement position.

In a computing machine, the combination with numeral keys and computing wheels, of a power shaft, clutches under the control lof said keys for causing said wheels to be turned by said shaft, each clutch forming part of an indexing device for turning said wheels, a traveling carriage for selecting the wheel to he turned, an escapement for said carriage controlled by said keys independently of said shaft, a locking device for preventing said carriage from feeding improperly, and means whereby said shaft drives said device through said clutches to positively make it effective when a clutch is effective and positively make it ineffective when a clutch ceases to he effective.

i 29,'In a computing machine, the combina tion with a power-driven shaft and an indexing device journaled on said shaft to turn therewith, of a key-controlled device shall turn, a wheel for transmitting motion from the indexingr device to other parts of the machine during a com'iuting operation, normal locking position by said key when said dog 1s moved to its meffectlve means or said wheel, and temporary locking means fol-.said wheel, each of said locking a part carried by said indexing device, whereby a rotation of said indexing device will first effect the ren'loval of said normal lock and apply said temporary lock and subsequently remove said temporary lock and drive said wheel. v

,J -lVALTER NVR-IGHT. lVitnesses:

Trr'us H. InoNs, F. E. ALl-xxxnnn. 

